74 CHECK-LIST OF NORTH AMEHICAN BIRDS. 



Genus MARILA Oken. 

 Marila Oken, Isis, I, 1817, 1183. Type, by tautonymy, Anas marUa 



hlNNMUS. 



StJBGBNus NTROCA Fleming. 



Nyroca Fleming, Philos. Zool., II, 1822, 260. Type, by tautonymy, 

 Anas nyroca GCldenstadt. 



Marila americ^a (Eyton). Redhead. [146.] 



Fiiligula americana Eyton, Monogr. Anatidae, 1838, 155. (North Amer- 

 ica.) 



Range. — North America. Breeds from southern British Colum- 

 bia, central Alberta, central Saskatchewan, and southwestern Kee- 

 watin south to southern California, Utah, southern South Dakota, 

 southern Minnesota, and southern Wisconsin; winters from southern 

 British Columbia, Utah, New Mexico, Kansas, Illinois, Maryland, 

 Delaware, and Massachusetts south to southern Lower California, 

 central Mexico, and Florida; accidental in Jamaica; in migration 

 casual in Alaska and regularly on the Atlantic coast north to south- 

 ern Labrador. 



Subgenus ARISTONETTA Baird. 



Aristonetta Baird, Rep. Expl. & Surv. R. R. Pac, IX, 1858, 793. Type, 

 by orig. desig.. Anas valisineria Wilson. 



Marila valisineria (Wilson). Canvas-back. [147.] 



Anas valisineria Wilson, Amer. Om., VIII, 1814, 103, pi. 70, fig. 5. 

 (Eastern United States.) 



Range. — North America. Breeds from central British Columbia, 

 Fort Yukon, Great Slave Lake, and southwestern Keewatin south 

 to Oregon, northern Nevada, Colorado (rarely), Nebraska, and 

 southern Minnesota; winters from southern British Columbia, Nevada, 

 Colorado, Illinois, Pennsylvania, and western New York south to 

 central Mexico (Jalisco) and the Gulf coast; in winter formerly abun- 

 dant, now less so, in Maryland, Virginia, and North Carolina; occa- 

 sional south to Florida, and casual in the West Indies, Bermuda, 

 and Guatemala; in migration north rarely to New Brunswick and 

 Nova Scotia. 



